Question

我正在使用“录制”按钮，用户可以按住该按钮来录制他们的视频。当用户停止按住“录制”按钮时，我想将他们录制的视频保存到相册。我对UISaveVideoAtPathToSavedPhotosAlbum函数有点困惑。到目前为止我的代码：

    @IBAction func RecordAction(sender: UIButton) {
    // User is holding down record button 
    if (!isRecording) {
        do {
            self.isRecording = true
            let documentsDir = try NSFileManager.defaultManager().URLForDirectory(.DocumentDirectory, inDomain:.UserDomainMask, appropriateForURL:nil, create:true)
            let fileURL = NSURL(string:"test.mp4", relativeToURL:documentsDir)!
            do {
                try NSFileManager.defaultManager().removeItemAtURL(fileURL)
            } catch {
            }
            movieOutput = try MovieOutput(URL:fileURL, size:Size(width:400, height:645), liveVideo:true)
            camera.audioEncodingTarget = movieOutput
            filter --> movieOutput!
            movieOutput!.startRecording()
        } catch {
            fatalError("Couldn't initialize movie, error: \(error)")
        }
    }
}

@IBAction func RecordDone(sender: UIButton) {
    // After user stops holding down the button, save video to gallery
    if isRecording == true {
        movieOutput?.finishRecording {
            self.isRecording = false
            self.camera.audioEncodingTarget = nil
            self.movieOutput = nil
            UISaveVideoAtPathToSavedPhotosAlbum(pathToMovie, nil, nil, nil)
        }
    }
}

非常感谢任何帮助。

Answer 1

尝试使用此功能保存视频：

func StartWritingvideo()
{
    player.pause()

    filters.removeAllObjects()

    var paths: [AnyObject] = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true)

    let  filePath : String!

    if trim == true
    {
        filePath = paths[0].stringByAppendingString("/output/outPut.mov")
    }
    else
    {
        filePath = paths[0].stringByAppendingString("/image.mov")
    }
    self.movieFile = GPUImageMovie(URL: NSURL(fileURLWithPath: filePath))
    self.movieFile.runBenchmark = true
    self.movieFile.playAtActualSpeed = false
    filters = [GPUImageAmatorkaFilter(),GPUImageMissEtikateFilter(),GPUImageSoftEleganceFilter(),FIIIN()]

    let indexpaths = self.collectionView!.indexPathsForSelectedItems()!
    let indexpath = indexpaths[0] as NSIndexPath


    self.movieFile.addTarget(self.filters[indexpath.row] as! GPUImageInput)
    let pathToMovie = paths[0].stringByAppendingPathComponent("IMG_filtered.MOV")
    do
    {
        try NSFileManager.defaultManager().removeItemAtPath(pathToMovie)
    }
    catch
    {
        error as NSError
    }
    let Data = NSData(contentsOfURL: NSURL(fileURLWithPath: filePath))
    print( Data?.length )
    let anAsset = AVAsset(URL: NSURL(fileURLWithPath: filePath))

    let videoAssetTrack = anAsset.tracksWithMediaType(AVMediaTypeVideo)[0]
    var naturalSize = CGSize()

    print(naturalSize)
    naturalSize = videoAssetTrack.naturalSize
    self.movieWriter = GPUImageMovieWriter(movieURL: NSURL(fileURLWithPath:pathToMovie), size: naturalSize)
    let input = self.filters[indexpath.row] as! GPUImageOutput
    input.addTarget(self.movieWriter)
    self.movieWriter.shouldPassthroughAudio = true
    if anAsset.tracksWithMediaType(AVMediaTypeAudio).count > 0 {
        self.movieFile.audioEncodingTarget =  self.movieWriter
    }
    else
    {
        self.movieFile.audioEncodingTarget = nil
    }

    self.movieFile.enableSynchronizedEncodingUsingMovieWriter(self.movieWriter)
    self.movieWriter.startRecording()
    self.movieFile.startProcessing()
    self.movieWriter.completionBlock =

    {() -> Void in

        self.stop = false
        self.movieWriter.finishRecording()
        self.movieFile.cancelProcessing()
        input.removeAllTargets()
        self.movieFile.removeAllTargets()


        if self.isLive == false
        {
            ALAssetsLibrary().writeVideoAtPathToSavedPhotosAlbum(NSURL(fileURLWithPath: pathToMovie), completionBlock:
            {_ in

                self.dismissViewControllerAnimated(false, completion: nil)
                self.player.pause()
            })
        }else {


                self.dismissViewControllerAnimated(false, completion: nil)

        }

    }


}

我对GPUImageFilter有很好的了解如果你需要任何帮助，请问我。如果您觉得我的回答有帮助，请放弃标记。

在Swift中使用GPUImage录制/保存视频

1 个答案: